Finding the Fourth Proportional to 3,899.76, 5,852.04 and 3,535.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899.76 : 5,852.04 = 3,535.20 : x
2. Step 2: Convert to fraction form
   3,899.76/5,852.04 = 3,535.20/x
3. Step 3: Cross multiply
   3,899.76x = 5,852.04 × 3,535.20
4. Step 4: Simplify right side
   3,899.76x = 20,688,131.81
5. Step 5: Solve for x
   x = 20,688,131.81/3,899.76
6. Step 6: Final answer
   x = 5,304.98